MICRO SWITCH™ Miniature Hermetically Sealed Basic Switches: HM Series, Single Pole Double Throw (SPDT), 1 A at 28 Vdc, Gold-Plated Contacts, Stainless Steel Enclosure, Thru-Hole Solder Termination, Maximum Differential Travel of .004, -184 °C to 121 °C [-300 °F to 250 °F] Temperature Range